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11 years on – Beagle 2 has landed!

Earlier this week came the news that a joint NASA and UK Space Agency and Leicester University announcement about Beagle 2, the British-led Mars probe, would be made on Friday. I have been twitching all week—hoping so hard that the news would be good. And it is!

At last—Beagle 2 has been found! Such great news, courtesy of NASA’s Mars Reconnaissance Orbiter, which sends back images of the planet’s surface from a height of between 250 and 316 km above Mars.

Beagle 2 on the Martian surface. Photo by Hirise / NASA / Leicester University

Beagle 2 on the Martian surface. Photo by HiRISE / NASA / Leicester University

The MRO scientists have been searching for it for years, and at long last they have found Beagle 2 at its Christmas Day 2003 landing spot at Isisdis Planitia. No message was ever received from the probe, and so it was assumed that it had crashed or somehow been destroyed or rendered unable to send back data. Its fate remained unknown.

Now we can see that Beagle 2 landed intact, and due to some of the solar panel-bearing ‘petals’ failing to unfold, it could not generate the energy needed to send back data.

Beagle 2 on Mars.

Beagle 2 and landing equipment on Mars.

The lead scientist, Professor Colin Pillinger, sadly did not live to see this great day. He died last May, but is immortalised at a topographic feature on the surface of Mars: Pillinger Point.

Professor Colin Pillinger and a model of Beagle 2.

Professor Colin Pillinger and a life-size model of Beagle 2.

I wonder if the landing spot of Beagle 2 will be named after its most recent arrival?

(I should add that I bear no truck with talk of the Beagle 2 mission being a heroic failure. It was an incredibly difficult mission achieved on a miniscule budget, and it should be remembered how challenging a successful landing on Mars is—the success rate is 51%. So to have got so close to achieving the mission goals is to be celebrated. And as Prof. Pillinger himself said, in that wonderful, warm West Country accent of his—there are no failures, just experiences providing valuable data from which to learn and progress.)

Sunday stroll: Cold Kitchen Hill

It was a chilly and blustery day today, and we went on a lunchtime walk up on Cold Kitchen Hill, which rises above the Deverills in southern Wiltshire. The Deverills are a set of villages in the Deverill River valley which wends its way between between chalk downs, and there are five of them: Longbridge Deverill, Hill Deverill, Brixton Deverill, Monkton Deverill, and Kingston Deverill. We parked by Kingston Deverill Church, where we saw our first flowering snowdrops of the season in the churchyard.

Scattered snowdrops in the strangely headstone-free churchyard of Kingston Deverill church.

Scattered snowdrops in the strangely headstone-free churchyard of Kingston Deverill church.

Spring is definitely on its waythe birds are twittering and the buds are fattening. The cow parsley is starting to growit always strikes me how early in the season it gets going, but then again it has to be at full height and flowering by late April, so that’s not such a surprise really, I suppose. A raven cronked overhead as we walked away from the church.

As we walked along the road two racehorses were being unloaded from a horsebox and were ridden off. We followed the road to one of the many footpaths and bridleways that cross the hill, meeting the racehorses and their riders. Later, as we climbed the grassy slope, we could see them being ridden at a fair lick over the hill in the distance.

Looking south towards Kingston Deverill.

Looking south from the lower slopes of Cold Kitchen Hill, towards Kingston Deverill.

Looking eastwards from the lower slopes of Cold Kitchen Hill, looking up the valley towards Monkton Deverill.

From the same spot, looking eastwards up the valley towards Monkton Deverill.

A lovely flock of fieldfare, maybe fifty or so, flew over us, and reminded us of our lone visitor (he was still there this morning patrolling the lost gardenI check every day to see if he is still with us). We met a lady, flushed of face and runny of nose, with two serious looking walking sticks, and we stopped and had a natter. She hadn’t seen the fieldfare or the raven but introduced us to a wonderful new termcrookdawsfor flocks of indeterminate black corvids/mixtures of crows, rooks and jackdaws.

Lovely chalkdownland from Cold Kitchen Hill. The track is the Mid Wilts Way.

Lovely chalk downland from Cold Kitchen Hill.

Then onwards and upwards. We startled a hare and it hared off, making a wide circle around us. We wandered over to the trig point on the summit (a mighty 257 metres above sea level). The trig points are built on high points around the country by the Ordnance Survey, the veritable surveying and mapping agency for the UK. The trig point (or trigonometry point, to give it its proper name) is a concrete obelisk with a flat upper surface, into which are set the fittings to accommodate the base of a theodolite.

The top of the trig point, showing attachment fittings for a theodolite. In the blurry middle distance is the beacon, a metal basket atop a high pole.

The top of the trig point, showing attachment fittings for a theodolite. In the blurry middle distance is the beacon, a metal basket atop a high pole.

On the site of the trig point is a bench mark, the height of the top of the horizontal line of which is established in metres above sea level (m ASL). They are invaluable not only for map makers, but for archaeologists and architects and builders and surveyorsin fact, anyone who needs to know the absolute height of where they are. In our archaeologising days Chap and I frequently had to go hunting for bench marks. Their location is marked on OS 1:2,500 maps, along with their value in m ASL, and they are usually on buildings like churches or other structures that are assumed likely always to be there, and unlikely to be demolished.

The bench mark on the trig point on Cold Kitchen Hill.

The bench mark on the trig point on Cold Kitchen Hill.

Anyhow, one of the basic features of a bench mark that it has to be level and unlikely to move, as of course this will alter its height and thus make any readings taken from it inaccurate. So we were somewhat amused by the appearance of the one on Cold Kitchen Hill. The ground at one side has been poached out into a hollow, presumably by cattle or sheep trampling there and resting against it, and so the whole thing leans at a drunken angle, making both the theodolite base and the bench mark, both of which need to be level to be of any use, rather useless.

Chap and the drunken trig point on Cold Kitchen Hill.

Chap and the drunken trig point on Cold Kitchen Hill.

In the distance we could see the beacon which had held the ceremonial bonfires that were last lit across the country in 2012 to celebrate the queen’s diamond jubilee, a rekindled (sorry, couldn’t help it) tradition that harks back to the days when the fastest method of transport was by horse, and so lighting fires in beacons on prominent hills was a far quicker way of relaying a message. Beacon Hill is a very common hill name in the UK, for just this reason. Beyond that, on the horizon, is Alfred’s Tower, a fantastic folly near Stourhead. In another direction we could see Duncliffe Hill and the escarpment on which Shaftesbury sits. And to the north-east was Salisbury Plain. Gliders were flying from the nearby Bath, Wilts and North Dorset Gliding Club.

Beautiful skyscape, looking north from Cold Kitchen Hill towards Salisbury Plain.

Beautiful skyscape, looking NNE from Cold Kitchen Hill towards Warminster.

It was very windy and pretty coldthe kind of keen wind that makes your mandibles/ears ache, for some reason, so we headed back down the hill. We scared a lark from its roost in the grass, but it settled nearby very quickly. On the way we noticed an abandoned ranging rod in the fenceline by the Mid Wilts Way, the sort we have used many times on archaeological sites, for surveying and to serve as 2 metre scales in photographs. I assume it was left by a surveyor, possibly an archaeologist, and forgotten. It was a wooden one, which dates itmost are metal and come in two parts these days.

The abandoned ranging rod. Note the bottom hinge on the gate made of the farmer's best friend, baler twine.

The abandoned ranging rod. Note the bottom hinge on the gate made of the farmer’s best friend, baler twine.

When we got back to the car we decided to have a look around the churchbut that’s for another post, I think.

Fetch, girl!

Hecate spectacularly failing to secure our supper

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Photographed in January 2010. The cock pheasant hung around the gardens near us for over a year. There are shoots nearby, so I don’t know if he eventually succumbed to a gun, or a predator, or old age (what is a pheasant’s life span?) or simply wandered off elsewhere. We certainly missed him and his clattering call and beautiful colours.

Round and round the apple tree

By coincidence, my last couple of posts have been about Scandinavia, snow and ice, and ovicaprids. I’m not going to manage to shake free of all of those in this post either …

Filedfare. Photo by Arnstein Rønning.

Fieldfare (Turdus pilaris). Photo by Arnstein Rønning.

We woke this morning to a terrific hard frost. The countryside is white; the trees are white; it is gorgeous. It’s not quite so gorgeous inside our bedroom, where there was ice on the inside of the windowsone of the joys of living in a 300 year old cottage with all its draughts and dampness and ill-fitting doors and windows.

We call one of the gardens next to ours ‘the secret garden’. Not so much because it is hidden, but because no-one uses it. The cottage to which it belongs is rented, and none of the tenants in the last few years has shown any interest in it. Contract gardeners come and cut the grass about four times a year, and that’s it. We can see into the garden from our bedroom dormer window. There is an alder tree which has grown from a small sapling when we arrived in 1992 to a large, two-trunked tree; there is an old ruined cottage or barn or outbuilding, the stone walls of which survive to about a metre or so high and are gradually being covered by brambles; and there is a venerable old apple tree. The apple tree always fruits prodigiously, and because no-one uses the garden, the apples stay where they fall. They provide welcome food for wildlife in the winter months.

This morning the apples were providing a frosty feast for about nine or ten blackbirds (Turdus merula), a grey squirrel (Sciurus carolinensis), and a single fieldfare (Turdus pilaris). Fieldfare are a palaearctic species, living in more northerly latitudes in the summer and heading south in the winterour fieldfare come from Scandinavia. Normally they travel in flocks, so it is always surprising to see a lone one. This one was vigorously defending its food, spending more time chasing all the blackbirds away than it was eating. Watching them, I could almost hear the Benny Hill Show theme tune in my head as the fieldfare scooted round and round the apple tree in hot pursuit of a blackbird.

Play nicely, children. Photo by Dave Jackson.

Play nicely, children. (This is a small fieldfare as an adult fieldfare is quite a bit larger than an adult blackbird). Photo by Dave Jackson.

I would love to have seen this many!

Update 4 January 2015: A week on and the fieldfare is still with us. He sits in one of the higher beech trees that surrounds the secret garden, and swoops down to chase off larger interlopers who are getting too close to his precious stash of slowly-rotting apples. He tolerates the smaller birds such as chaffinches (Fringilla coelebs) and dunnocks (Prunella modularis) and blackcaps (Sylvia atricapilla), but is aggressive in his pursuit of the blackbirds. Even larger birds like jackdaws (Corvus monedula) get the ‘get orf moi laaaand’ treatment from him (or should that be written in a Scandinavian rather than a West Country accent?)

Update 29 November 2016: The fieldfare stayed for about a month, leaving the day our neighbours on the other side of the secret garden started having some very noisy chainsaw work done on their trees. We didn’t see him in winter 2015, but this morning we woke to a hard frost and a lone fieldfare guarding the apple tree in the secret garden. Is it the same bird? I’d like to think so ….

Favourite websites: Britain From Above

My heart is in the past, and that is why I love this website: Britain From Above. In 2007 English Heritage, the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), and the Royal Commission on the Ancient and Historical Monuments of Wales (RCAHMW) acquired the historic oblique aerial photography archive of Aerofilms, a company set up in 1919 for commercial photography from the air. Usually the photos were taken for clients, maybe to establish the location of a building plot within the landscape, or to show the progress of a large construction site or the condition of a property, or as views to be sold to postcard manufacturers, but they have other significances too: the most important part of the collection spans the years from 19191953, and document a now-lost England, Wales and Scotland (sadly Northern Ireland is not part of the project). Currently there are over 96,000 digitised images in the collection.

Padstow, Cornwall. July 1930.

Padstow, Cornwall. July 1930.

I can—and do—lose hours on the Aerofilms website. If you register as a member (it’s very easy to do so, and free), you are able to zoom in on the photographs. The negatives have been scanned at such a high resolution that the tiniest details become clearly visible. They show snapshots of a long-lost Britain: stooks of wheat in a field after harvest; horse-drawn ploughs; airmeets for the dashing 1920s and 1930s aviators where planes are simply landed in a suitable flat field; steam engines puffing along pre-Beecham railway linesfilm sets from the 1930s; even the R-101 on its first test flight.  You can search by date, by co-ordinate, or by placename.

Salisbury Cathedral, 1933.

Salisbury Cathedral, May 1933.

The project encourages users to contribute information on places by tagging the images or adding data, photos, videos or links in a free text area. There are galleries which include all the images taken on a single flight, and even a gallery for so-far unidentified images, where the information accompanying them is lost or incorrect, and members have helped successfully re-attribute many of the photos in the collection. Some of the photos are on glass plate negatives which have been damagedyet another reminder of a lost time.

Many of the photos are of cities and built-up areas, but as my heart is in the countryside as well as in the past, I tend to stick to looking at the photos of rural areas.

An unlocated country house and countryside.

An unlocated country house and countryside. July 1938.

Not a real castle - an unlocated film set for a so-far unidentified film.

Not a real castle—an unlocated film set for a so-far unidentified movie. November 1928.

I have used Britain From Above for my archaeological research work: sometimes I undertake projects where I have to find out as much as I can about a particular area or site, and how it has developed over time. For this I will use documentary sources (books and articles, plus written documents such as letters, wills, diaries, estate accounts etc), maps and plans, drawings, paintings and sketches, and where available, photographs. The Aerofilm vertical photos at 1:10,000 scale are an amazing resource for identifying landscape features such as earthworks, and the oblique photos on Britain From Above are also very useful as they are often taken from a much lower altitude and so have much more detail. Earlier this year I worked on a project for the history of a house and plot near to Hampton Court Palace in Richmond upon Thames, London: the Aerofilm photos provided great details about its development from the 1920s onwards.

Hampton Court Palace, Hampton Court Park and environs, Hampton Court Park, 1948.

Hampton Court Palace, Hampton Court Park and environs, April 1948.

Britain From Above is a fantastic resource (especially for schools) and a complete time-sink. Once I log on, that’s it for a couple of hours …

A November sunset

I caught this gorgeous sunset sequence on 23 November. I love the way the shadows in the high cirrus cloudsthe mackerel skylengthen with the setting sun.

A Wiltshire sunset.

A little later.

Later still.

Yet later.

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Our friend Jules, who is a very talented artist, loves mackerel skies and puts them in his paintings whenever he can. It’s a shame he wasn’t around to see this one!

Holuhraun and Bárðarbunga

The eruption at Holuhraun, just to the north-east of and part of the Bárðarbunga volcanic system in Iceland, has been ongoing since 29 August this year. I wrote a couple of posts about it, here (its start) and here (its early days), but I haven’t written an update for a while.

The fissure eruption has continued unabated now for 85 days. The most recent figures I can find are for 17 November (four days ago), and then the lavafield covered an area of 73 km² and had a volume of more than 1 km³. This makes it the largest eruption in Iceland since the Laki eruption of 1783, when an estimated 14 km³ of basalt lava was erupted.

The Holuhraun lavafield (outlined) with the ongoing eruption.  Source: University of Iceland Twitter account.

The Holuhraun lavafield (outlined) with the ongoing eruption. Source: University of Iceland Twitter account.

There is no sign in decrease in activity, and the subsidence at the Bárðarbunga caldera is continuing as well.

This beautiful video was taken a week or so ago:

The eruption is demonstrating to us nicely the early stages in the life of a new shield volcano. So exciting!

The wonderful website VolcanoCafé has great updates on the eruption, as well as a page dedicated to all the useful web links to data, webcams etc.

Song thrushes

The song thrush (Turdus philomelos) is one of my favourite songbirds. The song of the male is so beautiful. Song thrushes live in the UK year-round, and one of the special seasonal markers for us is that first day in early spring when the male starts singing from the top of one of the tall trees near our cottage. He is always the first to start the dawn chorus each morning—the blackbirds follow, but for a time his is the only voice in the pre-dawn gloom. It’s a lovely way to wake up. 

Song thrush. Photo by Tony Wills.

Song thrush. Photo by Tony Wills.

The males stop singing later in the summer—maybe it’s to do with having established their territory and bred successfully. I miss their song when it stops, and so it’s always such a delight when, in the cold grey days of November, for some reason they start up again. A male has been singing his heart out around us for the last fortnight or so. His favourite perch is an ash tree in next door’s garden. It’s wonderful to hear. His song isn’t as full as in the spring, but it is still a thing of beauty.

I love the way thrushes repeat phrases as they sing. The ones around us seem to prefer three repetitions per phrase: I wonder if this is a regional thing? Elsewhere I have read of twice-repetitions being the norm.

(Even though we have two native thrush species, the song thrush and the mistle thrush (Turdus viscivorus) here in the UK, the song thrush is just the ‘thrush’ to me and many others, as mistle thrushes are so rarely seen. I have seen one once in the 22 years I have been living in our village.) 

When Chap and I were on holiday in New Zealand we were fascinated to learn that many British birds had been introduced to the country in the Victorian period—the settlers were homesick, I guess. Even though thrushes are now struggling in the UK and are a Red List endangered species here, they are thriving in New Zealand. We were delighted at several camp sites to find the thrushes so tame that they would hop around our feet and feed on the chopped dried fruit (apricots and mangoes) we put down for them. We were also saddened to hear at one vineyard that the thrushes are such a threat to the grape harvest that the vineyard owner shot them as pests.

Sleep tight, Philae

Almost a week on from the excitement of Philae’s landing on Comet 67P/Churyumov—Gerasimenko, and the dust has settled, just about (damn low gravity on that there comet). What a rollercoaster ride. My live feed to ESA decided to cut out right at the very moment that the landing was confirmed, so I missed the punch-the-air happy moment, but it was still such a wow-wow-wow moment, learning of the touchdown via ESA’s twitter feed rather than seeing and hearing about it. So fantastic. And then came the delay in getting the photos of the comet’s surface that we had been promised not long after Philae had touched down. Something was up, but ESA wasn’t telling, for a while at least. Then came the news that the scientists thought the harpoons hadn’t secured Philae to the surface—we already knew that the booster that would help force the probe on to the surface wasn’t going to work—and it might have bounced.

Photo taken by Philae from about 40m above the surface of the comet, just prior to Phiale's landing.

Photo taken by Philae from about 40 metres above the surface of the comet, just prior to Philae’s landing.

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X marks the spot: Philae’s initial landing place on the comet.

Philae's initial landing place on the comet, before the first of its tow bounces. She was right on target.

Philae’s initial landing place on the comet, before the first of its two bounces.  In the right hand shot, Philae and its shadow can be seen on the surface.

The next morning came the news that it had indeed bounced – twice. The gravity is so low on the comet’s surface that the first bounce is thought to have been in the region of 1 km high.

Philae landing on the comet, taken from Rosetta.

Philae’s first bounce, taken from Rosetta.

Then came pictures of the surface. Staggering shots, the first ever showing a close up of the surface of a comet. But the scientists still didn’t know where exactly on the comet Philae was.

The fiorst image sent back by Philae from the surface of the comet. The lander's leg is in the bottom right corner.

The first image sent back by Philae from the surface of the comet. Part of the lander can be seen in the foreground.

Then came the news that Philae had landed with one of its legs up in the air, and in shadow for much of the time. Not good news for either its stability (needed for the scientific tests) or more importantly for its life – if it didn’t get sun, the solar panels would not be able to recharge the batteries and the probe would shut down.

Panoramic image series taken by Philae, with a sketch of the lander itself superimposed indicating its probable orientation.

Panoramic image series taken by Philae, with a sketch of the lander itself superimposed indicating its probable orientation.

Then Philae’s location was established. Time was running out, and the scientists decided to run the tests and hope that Philae would have enough power to get the results back to Rosetta, for it to send the data back to us. Success!

And then Philae ran out of power, and shut down.

In its journey around the sun, there may come a time when the sun falls on Philae and it awakens and can talk to us and hopefully perform more science tasks. Rosetta will be accompanying the comet on its travels, and so will be able to send messages to and from earth. There is a plan to land Rosetta on the comet when its useful life is done: a fitting grave, close to little Philae. Together they will wander through the solar system, on their long orbit around the sun. I love this thought. It reminds me a little of the ending of one of my favourite films, Dark Star.

So much amazing science, such a tremendous achievement, such a heart-stopping few days full of highs and lows. Wow, what a great, great week for science.

Update: organic molecules have been detected by Philae on the surface of the comet!

Philae has landed!

So, so happy right now. Philae is safely down on the surface of the comet, “Its landing gear has been drawn back into the lander and it is sitting on the surface!” “It’s talking to us”.

Just waiting now for the first photos from the surface …

Such a massive, extraordinary achievement. I can’t say how proud I am of all the ESA scientists and engineers and others involved.

Shortly after parting from Rosetta, the lander Philae took a shot of its mothership., Rosetta, here seen above the sun flare.

Shortly after parting from Rosetta, the lander Philae took a shot of its mothership, Rosetta, here seen above the sun flare.

Philae soon after separation, photographed from Rosetta.

Philae soon after separation, photographed from Rosetta.

Philae on its way, photographed from Rosetta.

Philae on its way, photographed from Rosetta.

Last shot of Philae from Rosetta.

Last shot of Philae from Rosetta.

Before today, humankind had landed spacecraft on only six other celestial bodies: the moon, Mars, Venus, Titan (one of Saturn’s moons) and two asteroids.* This is the seventh. An amazing, stunning, superb achievement. Congratulations.

* (in 2005 NASA’s Deep Impact mission intentionally crashed an impactor into comet Tempel 1 in order to study the resulting debris cloud; it doesn’t quite count as a ‘soft landing’, and no data was sent back from the surface of the comet).